Re: custom TreeModel

I have filed https://gitlab.gnome.org/GNOME/gtkmm-documentation/issues/9

On 2019-12-27 14:41, danny wrote:
> hi,
>
> on one hand I genuinely feel that there is a real use case for this: 
> imagine a library that you've written, and you want to show its 
> results in a gtk treeview, but straight from your result data 
> structure and not by duplicating the nodes in the treeview itself. 
> What if the input-output schema of your library is fixed? or suppose 
> that you're porting it to gtk as an alternative to another gui? People 
> will struggle with linking their library to the gtk treeview; or in 
> any case I certainly had a hard time finding out how to get this 
> working. Yes, this way of adressing the data certainly is complicated, 
> but that makes an example all the more welcome, no? There is no way 
> around this kind of custom code, if you want to avoid duplicating your 
> data, or if your data is constantly changing, for instance.
>
> I also tend to get lost in the documentation for gtk(mm), and for 
> instance I just did not notice the examples in 
> gtkmm-documentation/examples/book/custom/custom_treemodel . So an 
> additional example in the gtkmm/demos does not look superfluous to me.
>
> On the other hand, I don't want to impose, and if you feel there is no 
> place for my example in the gtkmm demos, then so be it. People really 
> desperate for an example will now find it in the mailinglist at 
> "/Date/: Mon, 16 Dec 2019 23:10:45 +0100", I guess...
>
> happy new year,
> Danny.
>
> -----Original Message-----
>
> *Date*: Mon, 23 Dec 2019 13:23:20 +0100
> *Subject*: Re: custom TreeModel
> *Cc*: [email protected] <mailto:[email protected]>
> *To*: danny <[email protected] 
> <mailto:danny%20%[email protected]%3e>>
> *From*: Kjell Ahlstedt <[email protected] 
> <mailto:Kjell%20Ahlstedt%20%[email protected]%3e>>
>
> An alternative would be to add this in a new 
> gtkmm-documentation/examples/book/custom/custom_treemodel directory in 
> the gtkmm tutorial. And a description in a new section in the /Custom 
> Widgets/ chapter (which should then be renamed).
>
> Isn't this kind of custom class that implements one or more interfaces 
> quite unusual? And a bit more complicated than most of the demos? 
> There is no corresponding program in gtk/demos. All existing C++ demos 
> in gtkmm correspond to C demos in gtk.
>
> Kjell
>
>

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